4&comma; Q&colon; What is the payment term&quest;A&colon; T&sol;T or L&sol;C&comma; 30&percnt; deposit&comma; 70&percnt; before shipment&period;

5&comma; Q&colon; Can you supply samples for testing&quest;A&colon; Yes&comma; Our samples are free for your testing&comma;However&comma; you need to afford the delivery fee &lpar;DHL&sol;TNT&sol;EMS&rpar;The delivery fee will be deducted from the future bulk order&period;

6&comma; Q&colon; Do you have any certificate about quality control & management&quest;A&colon; Yes&comma; we have ISO9001&colon;2008&comma; ISO14001&colon;2004&period;

7&comma; Q&colon; What're your advantages comparing to other suppliers&quest;A&colon; We have been in the fields for more than 30 years&comma; our QC system and Lab system are well-developed&comma; and will promise you qualified and stable quality chemicals&comma; As a manufacturer&comma; competitive price is always available for you&period;